/*
 * @Autor: dc
 * @Date: 2022-03-09 17:35:31
 * @LastEditors: dc
 * @LastEditTime: 2022-03-22 13:38:48
 * @Description: 
 */

.center_div {
    display: flex;
    align-items: center;
    width: 300px;

}

.navgation {
    width: 120px;
    border: 1px solid #ccc;
}

.navgation .list-group-item {
    display: block;
    height: 40px;
    width: 100%;
    text-align: center;
    line-height: 40px;
}

.navgation .list-group-item.selected {
    color: red;
}

.conter {
    padding: 10px;
    height: 60px;
    flex: 1;
    border: 1px solid #ccc;
}